Inline docs render properly in extensions doc server.

chrome/common/extensions/docs/server2/test_data/test_idl/inline.idl

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[permissions=power]
+namespace power {
+  [inline_doc] enum Level {
+    system,
+
+    display
+  };
+
+  [inline_doc] dictionary DownloadQuery {
+    DOMString? query;
+
+    DOMString? startedBefore;
+
+    DOMString? startedAfter;
+
+    Level thing;
+  };
+
+  interface Functions {
+    static void requestKeepAwake(Level level);
+
+    static void releaseKeepAwake();
+
+    static void doStuff(DownloadQuery query);
+  };
+};